
STP High Mileage Fuel Injector Cleaner is a product designed to clean fuel injectors in vehicles with over 120,000 kilometres. It contains concentrated detergents that help dissolve and remove harmful carbon, gum, and varnish deposits on fuel injectors. The product is safe for carbureted engines and capless gas systems. It is recommended to be used every oil change or 6,000 kilometres, with the entire contents poured into the gas tank before or after fuelling. Some people believe that fuel injector cleaners are unnecessary or even a scam, as modern gasolines often contain additives that help clean the engine and combustion chamber. However, others have found that injector cleaners have helped improve their vehicle's performance.
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What You'll Learn
- STP High Mileage Fuel Injector Cleaner is designed for vehicles with over 120,000 kilometres
- The product contains detergents that dissolve and remove harmful deposits
- It can be used to restore engine performance and improve acceleration
- STP High Mileage Fuel Injector Cleaner is safe for carbureted engines and capless gas systems
- The usage frequency is recommended at every oil change or 4,000 miles

STP High Mileage Fuel Injector Cleaner is designed for vehicles with over 120,000 kilometres
The STP High Mileage Fuel Injector Cleaner is designed for vehicles with over 120,000 kilometres on the clock. This product is formulated to clean the fuel injectors of high-mileage vehicles, restoring engine performance and improving fuel efficiency.
Over time, fuel injectors can become clogged with harmful carbon, gum, and varnish deposits. These deposits can lead to hard starts, lost acceleration, and rough idling. The STP High Mileage Fuel Injector Cleaner contains concentrated detergents that help dissolve and remove these harmful deposits. By cleaning the fuel injectors, the product can restore engine performance and improve fuel efficiency, helping your car run smoother and last longer.
The STP High Mileage Fuel Injector Cleaner is safe for use with carbureted engines and capless gas systems. It is a DIY product, meaning it can be easily used at home. To use, simply pour the entire contents into your gas tank before or after fuelling. It is recommended to use the product every oil change or 6,000 kilometres.
While some people may consider fuel injector cleaners unnecessary or even a scam, they can be beneficial for high-mileage vehicles. Fuel injectors can become clogged over time, and cleaning them can help improve engine performance and fuel efficiency. However, it is important to note that not all fuel injector cleaners are created equal, and some may contain strong solvents that can be harsh on fuel system components such as rubber gaskets and hoses. Therefore, it is essential to choose a reputable product, such as the STP High Mileage Fuel Injector Cleaner, that is safe for your vehicle's specific fuel system.
Overall, the STP High Mileage Fuel Injector Cleaner is a reliable product for maintaining the performance and longevity of high-mileage vehicles. By cleaning the fuel injectors, it can help improve engine performance, fuel efficiency, and reduce emissions, making it a valuable tool for keeping your vehicle in top condition.
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The product contains detergents that dissolve and remove harmful deposits
The STP High Mileage Fuel Injector Cleaner is a DIY product designed to clean fuel injectors in vehicles with over 120,000 kilometres. It contains detergents that dissolve and remove harmful deposits, such as carbon, gum, and varnish, which can build up on fuel injectors over time.
These deposits can cause issues such as hard starts, lost acceleration, and rough idling if left unchecked. By dissolving and removing these deposits, the STP High Mileage Fuel Injector Cleaner helps to restore engine performance, improve fuel efficiency, and lower emissions.
The product is safe for use with carbureted engines and capless gas systems. It is recommended to use the entire contents of the bottle (either 5.25 fl. oz. or 12 fl. oz.) for every oil change or 6,000 kilometres, or 4,000 miles, whichever comes first. The frequency of use may vary depending on the treat rate, with the smaller bottle treating up to 15 or 21 gallons of gasoline and the larger bottle treating up to 21 or 28 gallons.
The STP High Mileage Fuel Injector Cleaner can be poured directly into the gas tank before or after fuelling. It is important to note that fuel injector cleaners may not be necessary for modern gasoline engines as they already contain additives that help clean the engine and combustion chamber. Additionally, some fuel injector cleaners may contain strong solvents that can be incompatible with certain materials in the fuel system, so it is important to check the product's compatibility before use.
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It can be used to restore engine performance and improve acceleration
The STP High Mileage Fuel Injector Cleaner is designed to clean fuel injectors in vehicles with over 120,000 kilometres on the clock. It can be used to restore engine performance and improve acceleration by removing harmful deposits that can cause hard starts, lost acceleration, and rough idling.
The cleaner contains concentrated detergents that dissolve and remove carbon, gum, and varnish deposits from fuel injectors. These deposits can build up over time and cause performance issues. By removing these deposits, the cleaner helps to optimise the engine's performance, improving acceleration and overall power.
One of the key benefits of using this product is its ability to restore engine performance in high-mileage vehicles. Over time, fuel injectors can become clogged and dirty, leading to a loss of power and acceleration. The STP High Mileage Fuel Injector Cleaner is specifically formulated to address these issues in older vehicles, helping them to run more efficiently and respond better.
Additionally, the cleaner can help lower emissions and save gas. By optimising the performance of the fuel injectors, the engine can burn fuel more efficiently, resulting in reduced emissions and improved fuel economy. This not only benefits the environment but also helps to extend the life of the vehicle.
To use the STP High Mileage Fuel Injector Cleaner, simply pour the entire contents into your gas tank before or after fuelling, depending on your preference. It is recommended to use the cleaner every oil change or every 6,000 kilometres for best results.
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$54 $74.95

STP High Mileage Fuel Injector Cleaner is safe for carbureted engines and capless gas systems
STP High Mileage Fuel Injector Cleaner is a DIY product designed to clean fuel injectors of vehicles with over 120,000 kilometres. It is safe for carbureted engines and capless gas systems.
The cleaner contains concentrated detergents that help dissolve and remove harmful carbon, gum, and varnish deposits on fuel injectors. Without cleaning, these deposits can lead to hard starts, lost acceleration, and rough idling. The STP High Mileage Fuel Injector Cleaner restores engine performance and improves acceleration by removing these deposits. It can also lower emissions and save gas.
To use the product, simply pour the entire contents into your gas tank before or after fuelling. It is recommended to use the cleaner every oil change or 6,000 kilometres.
While some people believe that fuel injector cleaners are unnecessary or even a scam, others have found them to be effective in improving engine performance and reducing emissions. It is important to note that most modern gasolines contain additives that help clean your engine and combustion chamber. However, for high-mileage vehicles, a dedicated fuel injector cleaner like the STP product can be beneficial.
Overall, STP High Mileage Fuel Injector Cleaner is a safe and effective way to clean fuel injectors in carbureted engines and capless gas systems, helping to improve engine performance and maintain fuel efficiency.
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The usage frequency is recommended at every oil change or 4,000 miles
The STP High Mileage Fuel Injector Cleaner is a DIY product designed to clean fuel injectors on vehicles with over 120,000 kilometres on the clock. It is formulated to remove harmful carbon, gum, and varnish deposits from fuel injectors. These deposits, if left untreated, can cause hard starts, lost acceleration, and rough idling.
The STP High Mileage Fuel Injector Cleaner is safe for carbureted engines and capless gas systems. It is recommended to be used every oil change or 4,000 miles, and the entire contents should be poured into the gas tank before or after fuelling. The treat rate varies depending on the size of the bottle purchased: a 5.25 fl. oz. bottle treats up to 15 or 21 gallons of gasoline, while a 12 fl. oz. bottle treats up to 21 or 28 gallons.
The usage frequency of every oil change or 4,000 miles is recommended to maintain optimal engine performance and prevent the build-up of harmful deposits. Over time, these deposits can accumulate and cause issues with starting, acceleration, and idling. By using the STP High Mileage Fuel Injector Cleaner at this frequency, you can help ensure that your fuel injectors are clean and functioning properly.
However, it is important to note that some people have differing opinions on the usage frequency. Some sources suggest that using a fuel system cleaner every 10,000 miles is sufficient, and that using it at every oil change is too frequent. Additionally, there are mixed reviews on the effectiveness of fuel injector cleaners in general, with some considering them unnecessary or even a scam due to the additives already present in modern gasoline.
Ultimately, the usage frequency of the STP High Mileage Fuel Injector Cleaner, or any fuel system cleaner, should be determined based on the specific needs and conditions of your vehicle. Factors such as the age, mileage, and condition of the vehicle, as well as the quality of fuel used, can influence the frequency of treatment needed. Consulting a trusted mechanic or automotive specialist can provide personalised advice and ensure that the product is used correctly and safely.
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Frequently asked questions
STP High Mileage Fuel Injector Cleaner is a DIY fuel system cleaner that contains concentrated detergents that help dissolve and remove harmful carbon, gum, and varnish deposits on fuel injectors.
It is recommended to use STP High Mileage Fuel Injector Cleaner every oil change or 4,000 miles. However, some users suggest using fuel system cleaners every 10,000 miles.
STP High Mileage Fuel Injector Cleaner can help restore engine performance, lower emissions, and save gas by removing harmful deposits that can lead to hard starts, lost acceleration, and rough idling.










































